I am actually a little stunned we haven't done this yet. I know most of us tend to lean toward the supernatural side of YA, but aren't there any fans of high school? ...Well, in books, anyway?
I'm a fan, obviously, and I've read a LOT. Almost as many as I have read in the paranormal area. That being said, the first one that springs to mind is The Karma Club by Jessica Brody.
Madison Kasparkova always thought she understood how Karma works. Do good things and you'll be rewarded, do something bad and Karma will make sure you get what you deserve.But when Maddy's boyfriend cheats on her, nothing bad comes his way. That's why Maddy starts the Karma Club, to clean up the messes the universe has left behind. Sometimes, though, it isn't wise to meddle with the universe.It turns out Karma often has plans of its own.